Heating coil



March 26, 1940.

F. 5. BLISS HEATING COIL Filed July 25, 1938 3 Sheets-Sheet 1 Inventor J15: Z2236 v anal . Attorneys March 26, 1940.

F, E. BLISS HEATING COIL Filed July 25, 1938 5 Sheets-Sheet 2 Inventor F. E. Buss HEATING COIL March 26, 1940.

3 Sheets-Sheet 3 Filed July 25, 1938 In venior 9g My imp v A itorneys 1o ture to the oil.

Patented Mar. 26, 1 f" f UNITED STATES ATENT QFF ECE HEArrncOo'm, v I I Frank E. Blisspvancouver, Wash a I I Application July 255-1938; Serial No. 221,245 i I p 7 fgfolaims; (cram-19s I t I T 'I'his in vention, relates to: heating coilsftoI-be edof a single length of tubing or pipe of a selectemployed in conjunction, with heating systernsof edlength. The runs ofeach coil'are superim v I oil ta'nks, and;'has for theprimary objectthe' posed. I I r r l provision of a jdevice of this character which 1 Arrangedat one end oithegroups of coils'iswill-eliminate the possibility ofmoisture'present an intake ,headenlfi and an exhaust; header H. in theheating system fro m'reaching the oil and The headersare arranged .in superimposed rela-; causing boiling thereoi and waste dueto boiling tion and one slightly -laterally of, the other, as over of the oil, from the consequently -renclearly shown in Figure 2.- The intake header deringj-a large saving; which upto the present 'is arranged-above the exhaust header. Thehead- 10 time has been excessive to oi l companiesl ers are in theform. of tubes or pipes and extend 1p Another-Object, of this invention is theprovitransversely of the coils. .supportinglegslti are sion of a coil construction. whichwillfreely exwelded or otherwise secured on the: headers and pand and contract under yaryingetemperatures are, equipped with; skids l9 to contact the 'bot without,dan eliof leakage and admitting moistom; of ,the tank, nse uentlyrnountingthe" I I headers forfree movement within the tank-.so With these and other objects in View, the inthat said headers can readily expand and con: vention consists in certain novel features of cone-v tract without being subjected to undue restraint.

struction. combination and arrangement of Y The upper, runs ofthe coilsconnect with the inparts to be hereinaftermore fully described and take header while the lower runs of the coils con 4 5 I I i meet with the exhaustheader. The-coils are weld- For a complete understanding of my invention, ed onto the headers. The upper runs of the reference is 'to be had to thefollowing descripcoils slope downwardly from the intake header ticn and accompanying drawings, in w h a to prevent condensation from accumulating Figure 1 is a longitudinal sectional view showtherein and thelqwer runs of the coils Slope down ing an i t equipped with a h t 11 iwardly to the exhaust header to prevent accumu- 25 st cte in accordance with the present 'lation'of condensation in the'lower runs. Allof v nho I n the coils connect to the headers above the bot- Figure2 is a vertical sectional view showing the to walls of said headersfexcept the end co l heating coil and its su'pporting means, which connects with the headers substantially i 'Figure 3 is an enlarged fragmentary vertical" flush with the bottom walls of said headers. .An 30 sectional view showing n I of th supporting] illustration of this arrangement is made in Fig- I racks for the h atin c il. I ure 7 and the-purpose'of which is to prevent the 1 Figure 4 is a, fragmentary transverse sectional i accumulation 0f Condensation in the coil. I view showing a portion of one of the racks. R a iv l p d r c s' upp r th pp r i .Figure 5. is: a side elevation illustrating the and l runs of the Coils Clearly Shown 35 heating coil. v I I Figure 5. The coils are free to slide on the racks Figure 6 is a sectional view taken on the line 'as not to restrain said coils when expandin 6-6 of Figure '5. I I I and contracting due to varying temperatures.

Figure 7 is a sectional view taken on line 1-! I} The racksinclude supporting legs 2| which may w of Figure 6. "be suitablyiastened on the bottom of the-tank 40' Referring in detail to the drawings, the nuand cross membersZ'Z on which the runs of the meral Ill indicates a conventional type of oil tank coils rest 'Mounted'on one of the racks and i in which oil is to be heated. The cover of the narallelin i I' S SI I'Hefnbi?!v 22 thereflf is 3' tank is not shown, however, it issupporte'd'on member 23 of angle iron construction and is i 5 the tank by vertically arranged members! I. Also provided with notches to receive therein the runs 4 shown on the tank It! is the usual swing pipellz of the coils. The runs of the coils are free to mounted for swinging movement and a Windlass move endwise of the member 23v andvcrosswise to is indicated at -13 for the operation of the swing accommodate expansion and contraction of a pipe. The foregoing description briefly setsforth members It and-l1. The racks at one side are. r

0 an oil tank to whichthe present invention is provided with hook-shaped hangers 24 in which adapted. f

I are mounted the runs of the end coil-of the Arranged in the tank H] a selected distance groupof coils positioning said coil in a plane from the bottom thereof is a steam'heating coil slightly below the other coils. The runs of the I construction l4 consisting of groups of coil pipes coils being slidably. mounted ongthe, racks, said 5 l5 each of hairpin formation and each constructcoils may expand and contract without restraint er I! and is suitably connected and extends had through the coil. I I

coil of the character, de-

ing drawings and through the use of the racks coils of considerable length maybesuccessfully employed. As the coils and headers are free to move under. expansion and contraction, the possibility of the coils and the headers breaking is eliminated.

Welded to one end of the intake header is a fitting 25 suitably connected and extending through a wall of the tank and equipped with a thermostatic control valve 26 'of a conventional construction. The valve 26 connects the fitting 25 to a stream supply pipe (not shown). A fitting 21 is welded toone endoi the exhaust headthrough a. wall of the tankand is equipped with 'a steam trap 28 arranged exteriorly of the tank and of a conventional construction. Through the use of the valve 26 and the steam trap 28 will permit perfect control of the steam to be A steam heating scribed and employed in a heating system and within an oil tank to a desired, temperature without danger of moisture reaching the oil and causing the latter to boil.. If moisture reaches the oil while heated immediately causes the oil to boil and flow over the'tank and thereby bring about a considerable waste of oil and 'co'nsequently loss in money.

It is believed that the will fully set forth the construction and advantages of this invention to those skilled in the art towhich such a device relates, so that further detailed description will not be required.

will permit heating of theoil foregoing description, when taken in connection with the accompany-' Having thusdescribed my invention, what I claim is;

1. A heating coil-,ior 'oil' tanks comprising upper and lower intake andexhaust headers, supporting legs for said headers, skids-carried by said ilegs and resting on a tank to mount the headers for sliding movement, fittings for said headers and securedto-and extending'through the tank for connecting vthe headers to a stem heating system, horizontally arranged coils of hairpin shape .connectingjthe headers and each coil having upper and lower runs inclining from the intake header to the exhaust header, racks mounted in the tank andsupportingthe upper and lower runs of the coils for free sliding movement relative. to said racks and one of said coils being supported by the racks in a plane slightly below the other coils 'and'connected onto the headers substantially flush with the bottom walls of the headers. I I

2. A" heating coil for oil tanks comprising intake and exhaust headers arranged in cIose 'r'elation with the exhaust header slightly. laterally of the'intak'e header and'in a lower plane, a plu rality of heatingcoils of hairpin shape-welded onto said headers to permit flow or steam be- .tween said headers with condensation freely drainingto the'e'xhaust" header from the coils and the intake header, supporting legs on the headers and-resting freely on a tank to permit the headers to move freely withth'e expansion and contraction of the coils, racks in the tank and slid'ablysupporting the coils.

' FRANK E. 'BLISS.- 

